Subject: Software Modelling Innotech.com is a company managing short courses in Malaysia. It has 50 institutes all over Malaysia. All students can search course timetable to obtain available course for a semester in any institute specified by the students. Only the registered student is allowed to make online booking. A new student needs to register a new account by entering personal details, such as name, address, higher education, and email as username. If the new student entered a wrong email, the system would prompt to re-enter the email. The system will create a student account if one does not exist and provide a temporary password for login. When the account is created, the student becomes a registered student who can proceed to login to the system. The student is considered in course unregistered status if he never books a course before. To make a booking, the student is required to select a course and institute he/she wants to join. Before he starts registering, he must check the booking page displays his correct name, IC/Passport number, and matriculation. Then, the student can select semester and classroom of his choice. The booking page will send the entered information with the student's location to the Virtual Private Cloud (VPC) of AWS for security. Here, VPC that is in idle will change to connecting status to validate the security of the information received. If the connection is insecure, a display message "secure connection is unsuccessful, please try again later" will be sent. If the connection is secure, the VPC will change its status to open to open VPN connection. Then, VPC will pass the S3 gateway point to Innotech.com AWS account where the account will return a private link address back to the VPC before the connection close within 1 second. The time taken from opening VPN until VPC receives private link address is 3 second. Once the VPC is close and AWS account save the information, then AWS account will create a QR code. The QR code will be stored to the database under register_tbl within 1 second and at the same time the QR code will be sent to the course_tbl as well for future record. A display "to complete the registration, you have 5 days to make the payment will be pop up to the booking page. Since the student is not paying the fee yet, his booking is considered pending. The student has the option to print the information entered or just view them. The student can proceed to make a payment for the course he wants to join using credit card or debit card. Once payment has gone through successfully within 48 hours, the system will issue a booking confirmation by sending a notification to the student via email. If the payment is rejected, the student will receive a failure notification. 1. Draw a sequence diagram for "book course" use case including its states and time
